David Mayer was a lieutenant in the US Army and spent decades living and teaching in Britain. Unfortunately, “David Mayer” was also an alias of one Akhmed Chatayev, a Chechen militant suspected of masterminding the 2016 attack on Istanbul’s airport. Several branches of the US government have gotten the two confused, and now the real Mayer can’t receive packages from the US and has trouble traveling. — The Observer (UK)